Google-API-Python-Client 不适用于开发者密钥

Question

我无法让这个脚本工作。我将DEVELOPER_KEY替换为我从Google API创建的API密钥。如果有人能帮助我，我将不胜感激。脚本来自此页面：https://developers.google.com/youtube/v3/code_samples/python#search_by_keyword

#!/usr/bin/python
from apiclient.discovery import build
from apiclient.errors import HttpError
from oauth2client.tools import argparser

# Set DEVELOPER_KEY to the API key value from the APIs & auth > Registered apps
# tab of
#   https://cloud.google.com/console
# Please ensure that you have enabled the YouTube Data API for your project.
DEVELOPER_KEY = "REPLACE_ME"
YOUTUBE_API_SERVICE_NAME = "youtube"
YOUTUBE_API_VERSION = "v3"
youtube = build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION, developerKey=DEVELOPER_KEY)

我收到以下错误消息。

Traceback (most recent call last):
  File "hello.py", line 16, in <module>
    youtube = build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION, developerKey=DEVELOPER_KEY)
  File "/home/alican/.local/lib/python2.7/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/home/alican/.local/lib/python2.7/site-packages/googleapiclient/discovery.py", line 226, in build
    credentials=credentials)
  File "/home/alican/.local/lib/python2.7/site-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/home/alican/.local/lib/python2.7/site-packages/googleapiclient/discovery.py", line 358, in build_from_document
    credentials = _auth.default_credentials()
  File "/home/alican/.local/lib/python2.7/site-packages/googleapiclient/_auth.py", line 40, in default_credentials
    return oauth2client.client.GoogleCredentials.get_application_default()
  File "/home/alican/.local/lib/python2.7/site-packages/oauth2client/client.py", line 1264, in get_application_default
    return GoogleCredentials._get_implicit_credentials()
  File "/home/alican/.local/lib/python2.7/site-packages/oauth2client/client.py", line 1254, in _get_implicit_credentials
    raise ApplicationDefaultCredentialsError(ADC_HELP_MSG)
oauth2client.client.ApplicationDefaultCredentialsError: The Application Default Credentials are not available. They are available if running in Google Compute Engine. Otherwise, the environment variable GOOGLE_APPLICATION_CREDENTIALS must be defined pointing to a file defining the credentials. See https://developers.google.com/accounts/docs/application-default-credentials for more information.

Answer 1

这是google-api-python-client的1.6版本的问题。使用以前的版本（1.5.5）应该可以解决问题。

Answer 2

如果你想使用google-api-python-client版本1.6，请执行以下操作。转到 https://console.developers.google.com/apis/credentials。依次选择创建凭据、服务帐号密钥、App Engine 默认服务帐号，下载 JSON 文件并将其放入项目文件夹中。然后将其设置为环境变量 GOOGLE_APPLICATION_CREDENTIALS 。

os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "./google_application_credentials.json"